Found this in a Google cache:
>From the SMCA map, can we find the name of the SMF datasets & which one is
>active? I am trying
to find the information displayed by 'D SMF' command thru REXX. The SMCAFRDS
field points to
smf dataset but i could not find out the format(map) after jumping to SMCAFRDS
address in SMCA
map.
This question posed on 20 October 2001
You can't find the mapping because the SMF RDS is an OCO (Object Code Only)
control block. If
you have a copy of the SMFDUMP program, there is a mapping in there. This
program used to be
distributed with CBIPO and with ServerPac in IPO1.SAMPLIB or CPAC.SAMPLIB. IBM
no longer
distributes it.
Here is a mapping in a version of the program that I found. The program still
functions
correctly as of OS/390 2.10, but I have no way of verifying the accuracy of
this DSECT. You
may be able to work with IBM to get a current mapping.
IEEMBRDS DSECT
RDSID DS CL4 CONTROL BLOCK ID
RDSNEXT DS F FORWARD CHAIN POINTER
RDSPREV DS F BACKWARD CHAIN POINTER
*
RDSFLG1 DS X
RDSFREE EQU X'10' 1 - NEED TO FREE DATASET
RDSDUMP EQU X'08' 1 - OPER HAS BEEN TOLD TO
* DUMP DS
RDSREADY EQU X'04' 1 - DS IS OPEN AND READY
RDSCLOSE EQU X'02' 1 - DS NEEDS TO BE CLOSED
RDSNDOP EQU X'01' 1 - DS NEEDS TO BE OPENED
*
RDSFLG2 DS X
RDSLOST EQU X'80' DUMMY RDS FOR LOST DATA
RDSPHYER EQU X'40' 1 - PHYSICAL I/O ERROR
RDSLOGER EQU X'20' 1 - LOGICAL I/O ERROR
*
RDSFLG3 DS X RESERVED
RDSNLEN DS X RESERVED
RDSNAME DS CL44 DATASET NAME
RDSVOLID DS CL6 VOLUME SERIAL
DS CL2
RDSDDN DS CL8 DDNAME RETND BY DYNALLOC
RDSCAPTY DS F CAPACITY IN # OF BLOCKS
RDSNXTBL DS F NUMBER OF NEXT AVAIL BLOCK
RDSBQE DS F ADDR OF BQE BEING WRITTEN
RDSAVSPC DS F AVAIL SPACE FROM SHOWCB
RDSENRBA DS F ENDRBA FROM SHOWCB
RDSCINV DS F CONTROL INTERVAL SIZE
RDSDOMID DS 2F MSG # OF DUMP MSG
RDSRPL DS CL76 VSAM RPL
RDSACB DS CL76 VSAM ACB
--
Phil Payne
http://www.isham-research.co.uk
+44 7833 654 800
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